Katabatic Gear Flex 22 Quilt vs Sea to Summit Spark Pro Down 30
Weight and specs compared for 2026 — and which one to choose.
22°F down quilt with 900-fill-power goose down and adjustable footbox. Regular size. Highly packable and ultralight for 3-season backpacking.
Check price Full details →Ultralight mummy bag rated to 30F (-1C) with 950+ fill-power Ultra-Dry Down. 10-denier shell, shoulder and footbox zippers for temperature control.
Check price Full details →Katabatic Gear Flex 22 Quilt vs Sea to Summit Spark Pro Down 30: which should you buy?
If saving weight is your priority, the Sea to Summit Spark Pro Down 30 wins — at 619 g it is 27 g (4%) lighter than the Katabatic Gear Flex 22 Quilt (646 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest sleep system page, or browse the full gear weight database.